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SEMINAR: Maths and Stats Colloquium

April 12, 2018 @ 4:00 pm - 5:00 pm

Maths and Stats Colloquium : Have you ever wondered what is a fluid theory?

Fluid models are widely employed in many fields of science, ranging from astronomy and physics to biology and chemistry. The fundamental principle, and motivation, behind fluid models is to provide an effective macroscopic representation of the collective behaviour arising from a large number of microscopic events. Thus, the main advantage of fluid models is a reduction in complexity, while still capturing the essential characteristics of the macroscopic system. The difficulty in constructing fluid models from kinetic theory arises from the presence of the collision operator. A systematic treatment of the collisional effects in a plasma is presented to derive fluid models beyond the usual assumption of “thermal equilibrium”. Such extended models will greatly help model cold and moderate temperature plasmas, for example in the study of astrophysical phenomena or in industrial applications.